Bump ee version and docker image version

Signed-off-by: Mriyam Tamuli <[email protected]>

Author: mbtamuli

VERSION

@@ -1 +1 @@
-4.0.0-beta.5
+4.0.0-beta.6

img-versions.json

@@ -2,9 +2,9 @@
     "easyengine/cron": "v4.0.0-beta.5",
     "easyengine/mailhog": "v4.0.0-beta.5",
     "easyengine/mariadb": "v4.0.0-beta.5",
-    "easyengine/nginx-proxy": "v4.0.0-beta.5",
+    "easyengine/nginx-proxy": "v4.0.0-beta.6",
     "easyengine/nginx": "v4.0.0-beta.5",
-    "easyengine/php": "v4.0.0-beta.5",
+    "easyengine/php": "v4.0.0-beta.6",
     "easyengine/phpmyadmin": "v4.0.0-beta.5",
     "easyengine/postfix": "v4.0.0-beta.5",
     "easyengine/redis": "v4.0.0-beta.5"